Firesong - Giphy for Music in Slack w/ Emoji Search
Slack Meme Bot - Spice up your team conversations with memes
Yarn for Slack - Drop TV and movie clips into your Slack chats
Slackbox - Spotify playlist collaboration through Slack
GoGifApp - Free Slack GIFs App, multiple images to pick from at once
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.